Method of generating steam for submarine boats.



R. DEQ'UEVILLEY-MONTJUSTIN. METHOD OF GENERATING STEAM FOR SUBMARINE BOATS.

APPLIOATION FILED MAY 12, 1909,

' 986,373. J P ente Mar. 7, 1911.

2 SHEETSSHEET 1. F6

Engine Gander;

Jada Boiler R. DEQUEVILLEY-MONTJUSTIN. METHOD OF GENERATING STEAM POE SUBMARINE BOATS.

APPLICATION ITILED MAY 13, 1909.

, 986;373 Patented Mar. 7, 1911 2 SHEETSSHEET 2.

BAY'MQND nnaunvIL nY-nonrJUsnN, or 'KIEL, GERMANY.

' METHOD-OF GENERATING STEAM FOB SUBMARINE BOATS. I

flpecification of Letters Patent. Application filed Bay 12, 1909. Serial No. 495,491.

Patented Mar. '7, 1.911.

. To all whom it mayooncem: I

Be it known that I, RAYMOND DEQUEVHr -LEY-ll'I0NTJUSTIN, a subject of the King of Spain, and

resident of 94 Feldstrasse,-Kiel, Germany,

have invented certain new and useful Improvements irrMethods of Generating Steam for Submarine Boats,

of which the following is a specification.

/ The present invention relates to a steam power plant for the type of submarine boats which are driven by a steam engine which has. itsdriving steam generated in a fired steam boiler during the surface travel while, during I the submerged travel, the driving steam is generated in a'. hot Water; boiler. These steam power plants, which were first hsed by Nordenfelt, do not meet the modern requirements to be complied with for a sub marine boat in as far as the hot water boiler tively short time 'so that travel under water can only take place for a' short time-. The objectof the present invention isto improve this type 'of steam power plantsand t'he process of operating the same in, such-a manner that the duration of the sub merged travel can be considerably prolonged; and that it will furthermore be pee-- sible to obtain the water carried along for which water is so valuable in evaporation, submarine boats by reason of the available space, without neaessitating special tanks for 'bodimcnt of a steam power plant feed'water and water of condensation. p

The accompanying drawings show, by way of example and diagrammatically,-an em in a ordanoe with the present invention. The s. veral figures of the drawings merely difirfrom one another in having the essential arts of .the steam power plant connected with one another by means of steam-pipes and waterpipes in different ways corresponding to the possibilitiesofoperation during the surface travel-and the submerged travel.

The stea mpowcr plant mainly consists of therfollowing parts: a water-tube boiler A which can be heated by means ofan oil burner a a soda-boiler B which is divided into a. compartment 11 for a solution of caustic-soda; and "two compartments b for water toflbe evaporated a hot water boiler 'C; a. steam engine D and a condenser E; These parts ofthe-steam power plant are connect- .edgwith one another in the manner shown in fthe 's'everal figures by means of steam-pipes alone can only give off steam for a comparaand water-pipes which are indicated by the reference characters F to S and through which, during the operation of the sic-am wer plant, steam or water circulates in the 'rections indicated by the arrows.

During the surface travel the operati n of the steam power plant takes place hi the manner shown in Figure 1. The live steam required for driving the steam engine D is 'then generated in the water-tube boiler A which is heated by means of the oil-burner a. The steam is conducted through a pipe F into the steam engine D and after the steam has performed its work in the engine it. is conducted through a pipe G into the condenser E. After the steam has become condensed in the condenser the water of condensation is conducted feed-water to the wager-tube boiler A through the pipe H.

rior to the change to submerged travel a part of thelive steam generated is condupted through the pipe J into the hotwater boiler C- and into the water-compartments b of the soda-boiler, whereby the contents of the hot water; boiler and of the sodaboiler is brought to such a temperature (the' hot water boiler to a temperature of about change to submerged travel takes place. YVhen it is desired to dive with the boat, the oil-burner oz of the water-tube boiler A is extinguished. The operation of the steam power plant now preferably takes place in 'the manner shown in Fig. 2. Inv this instance .909 that these boilers are immediately ready for operation when the the boiler C 1s used as hot water boiler, that is the steam generated in the boiler C is conducted directly to the steam {engine D through the pipe K. .The exhal st steam from the steam engine passes through the pipe G into the ondenser 1*) from which the water'of. condensation returns as ifeerlwater to the boilerO- throught-hepipe L.

When the steam generated in the hotwater boiler C is. not any longer of sufiicient tensi n I proceed to the operation of the sodaboiler as illustrated in Fig; 3.

steam from the-engine is not any longer conducted exclusively 'to'the condenser E but a partof the exhaust steam 1s conducted through the pipe M into the soda-solution in the compartment 6 and. is absorbed by the solution. The solution is thereby heated and gives- The exhaust- Y off itsheat to the water in the oompartmenlfsb" and generates live steam/ in these compartments. This live steam is then conducted through the steam-piped? into the steam engine D. i

As experience has demonstrated that the heat in the soda-boiler, especially*- at the start ofthc operation, increases to a .consirlcrable extent and as the capability of absorption of the soda-solution decreases with the increasing tem condensation, whicl is formed from the part of'the exhaust steam of the machine conducted to the condenser, is, especially at the, start of the .operat-ion, 'conducted through the pipe into the water compartments lb of the soda-boiler. This fact on ables the operator to regulate the temperature'of the Water to he evaporated and therefore also the temperature of the sodasolution in such a manner that the caper bility of absorption of the soda-solution remains approximatelythe same. During the operation the feed to the water-compartments h takes place from the boiler C through the pipe P and in this instance theboiler (J is used 111 its second capacity, viz.

' as feed 'watcrreceptacle for the soda-boiler B, The provision of special feed water tanks is therefore niade unnecessary.

If, after a protracted submarine travel, the dilution of the solution caused by-the absorption of the. exhaust steam from the engine has caused the level of the soda-solution to become so high that the solution coinpletely'fills the 'coi'npartment Z1 ori-f before that time the dilution of the solution has reached such an extent that the soda solutionis not any longer capable of ab- 0. is again put into operation. giThesmethod oi. operation shown in Fig. 5 is'tlien first sorbing any steam, the duration of the submerged travel of the boat'canbe further prolonged by using the methodof operation illustrated in Fig. 4. This method consists in the further utilization, to the greatest practicable. extent, of the heat present in the sodasolution for the generation of live steam in the water co'mpartments b. The

live steam is conducted to the engine D through the pipe N as in the mode of operation shown in Fig. 3. 'However, in thea method according to Flg. 4 the exhaust no steam from the engine D is not any longer conducted into the soda-solution, but it is conducted exclusively into the condenser E. The water of condensation is now conducted through the pipe L into the boiler Candis stored therein. The boiler C then serves in a'third capacity, viz. as a receptacle for'the water of condensationv so that the provision of special tanks for. the water of condone tron-1s made unneoessgry.

made use of and serves to once more ut the soda-boiler B and the hot water boiler G in condition for operation. The live water-tube boiler rature. the' water ofthewater compartments 6" of the soda- On the change tosurface travel theburnjerg boiler to propel trawl secon steam required for driving the steam engine D is in this instance again taken from the A and is conductor-l through the pipe F to the engine I) whence the total exhaust steam passes through the pipe G into the condenser E. Simultaneously herewith another art of the generated live steam is conducted from the water-tube boiler A through the pipe J into boiler B, whereby the-diluted soda-solution is evaporated, and in order to facilitate the evaporation the'compartinent b for the I soda solution is .placed in communication with the condenser E through the steam pipe R. The Water of condensation which is formed in the condenser E from theex haust steam of thesteam engine D and from the steam arriving from the compartment b 'is conducted to theboiler C which serves as tank for the ywate'r of condensation and which, in that manner hecomes gradually refilled, the amount of the water in the boiler C having become greatly decreased during the operation according to Fig. 3. The surplus of hot water resulting from the introduction of live steam through the pipe J into the water compartments 6? is conducted as feed water through the pipe-S into. the Water-tube boiler A or in the 0 posite-BS direction through the pipe P (If )into the boiler C (F ig.3) when th 'iler- G is sufliciently refilled the'watebtd boiler A may be supplied with 'water therefrom through the pipe 3. ,Whenthe soda-sold. 100 tion has become sufficiently concentrated by the evaporation and when the boiler Chas becomesufiiciently refilledl oneemore revert to "the method of operation s'hown in Fig. 1 (the cycle A D E Havin thus described my invention and what I c aim as new therein and desire-to secure by Letters'Patent 1. In the method herein"desc propelling vessels "of the submarine type Q revel,v

during. submerged travel, and us boiler in'coiinection ith .thel-zfired boiler tosupply" the necessary; stea crating power upon. the exliaustio hot water boiler, and in conducti g v heated water remaiiaiingrv initheihotj watery whereby to prolong the submerged travel.

- 2. In the method herein described for propelling vessels of the submarine ..type which consists; first, in lsinga fired steam the vessel during surfs-@1125 I in conveying ',St88.111 there rorninto a hot water boiler'for generatin "be .utilizedduring 'submer e t travel and third,- in the utilization o "a soda-boiler wherein a 'part'ofi' theciihaust steam from the engine is conducted into the soda solution for generating live steam, While the remaining portion of the exhaust steam after condensation, and after reduction to a lower temperature than the water in soda boiler, is introduced therein for keeping within permissible limits the widesirable increaseof heat inthe soda boiler,

' whereby boiler to propel to prolo the duration of operation of the soda b diler.

3. In the method herein described for propelling Vessels of the submarine type which consists; first, in using a fired steam the vessel during surface travel; secon from into a hot water boiler for generatin steam to be utilized during submerge travel; third, in the employment of a soda boiler having its soda compartment connected with the exhaust of the engine and adapted to generate the necessary steam power upon the'exhaustion of said hot \vaterboiler generating means; fourth, in discontinuing the use of the soda boiler means when th increasing dilution causes the soda solutii to completely fill its re ceptacle or makes it incapable of further absorption; fifth, in then conducting the exhaust steam aforesaid into a condenser and thence storing the same in the hot water boiler aforesaldg and sixth, in utilizing the heat remaining in the soda solution for generating live steain in the water'comparb' ment of. the soda boiler until theheat of the soda boiler is practically exhausted.

4:. In the method herein described for propelling vessels of the submarine type which consists; first, in using a fired steam in conveying steam thereboilerrto propel the vessel during surface travel; second, in conveying steam therefrom into a hot water boiler for generating steam to be utilized during submerged.

travel; third, in the employment of a soda boiler connected with the aforesaid means fired steam boiler during the. next surface travel, to the hot Water boiler for utilization durin the next submerged travel.

5. n the method herein described for propelling vessels of the submarine type which consists in using a fired steam boiler to propel the vessel during surface travel,

supplying a hot water boiler with live steam direct from the fired steam boiler to quickly generate steam therein for submerged travel, using a soda boiler in connection with the fired steam boiler to sup ply'the necessary steam generating ower upon the exhaustion of the hot Water oiler, and in conducting the heated 'water remaining in the hot water boiler to the soda boiler as feed Water whereby to prolong the submerged travel. p

The foregoing specification signed at Paris, France, this 21st day of April, 1909.

RAYMOND D'EQUEVILLEY-MONTJUSTIN. In presence of Dean B. Mason, JonN BAKER. 

